Facebook unveils host of mobile-friendly features

Facebook says it will let users log in to apps anonymously, without sharing their identities and personal information with mobile applications they don't trust.

Facebook's 1.28 billion users can already use a "log in with Facebook" button to sign up for apps that let them listen to music, play games, read the news and monitor fitness activities. But using the button allows apps to access information related to the Facebook user's identity.

With the anonymous login, Facebook will have information about users but the apps won't. Facebook says the feature will let more people to try out new apps.

The company is also launching more granular controls that let people determine the types of information they share with apps when they want to use their Facebook identity to log in.